Let the updater delete entries and add small test harness

In order to run the tests you must put your DM password into
~/.ipa/.dmpw

Some tests are expected to generate errors. Don't let any ERROR
messages from the updater fool you, watch the pass/fail of the nosetests.

tests/test_install/1_add.update

@@ -0,0 +1,23 @@
+# Add in a new place in the DIT for our test cases
+
+dn: cn=test, cn=accounts, $SUFFIX
+add:objectClass: top
+add:objectClass: ipaContainer
+add:cn: test
+add:description: Test container
+
+# Add a test user
+dn: uid=tuser, cn=test, cn=accounts, $SUFFIX
+add:objectclass: top
+add:objectclass: person
+add:objectclass: posixaccount
+add:objectclass: krbprincipalaux
+add:objectclass: inetuser
+add:homedirectory: /home/tuser
+add:loginshell: /bin/bash
+add:sn: User
+add:uid: tuser
+add:uidnumber: 999
+add:gidnumber: 999
+add:cn: Test User
+